Flying Binghi
I admire your unit as it is active not passive. You are obviously a cautious pilot and to be commended.
Without acting derogatory to your effort, this unit must be $10,000 plus and is range limited in comparison to ADS-B IN (but one accepts that the range of your unit is more than adequate for avoidance).
In analysis, if $15,000 enables a GPS and ADS-B IN, I feel is a good alternative for many owners.
I am intrigued at this terroruist misuse of GPS. Spoofing is not restricted to GPS. Turn off transponder, spoof MSSR radar - and primary radar when beyond range. If GPS is turn off, we are probably at war.
With ADS-B spread around, surely ADS-B is more protected than radar - one shoulder launch misile takes out radar aerial more easily than takes out ADS-B multiple stations. Can you be specific of your concerns?